/Engine/Source/Runtime/Engine/Classes/Engine/Polys.h
static [FPoly](API\Runtime\Engine\Engine\FPoly) BuildAndCutInfiniteFPoly ( const FPlane & InPlane, const [TArray](API\Runtime\Core\Containers\TArray)< FPlane > & InCutPlanes, [ABrush](API\Runtime\Engine\Engine\ABrush) * InOwnerBrush )